6579481669 has 4 divisors (see below), whose sum is σ = 6608213260. Its totient is φ = 6550750080.

The previous prime is 6579481651. The next prime is 6579481687. The reversal of 6579481669 is 9661849756.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6579481651) and next prime (6579481687).

It can be written as a sum of positive squares in 2 ways, for example, as 4633524900 + 1945956769 = 68070^2 + 44113^2 .

It is a cyclic number.

It is not a de Polignac number, because 6579481669 - 2²⁵ = 6545927237 is a prime.

It is a super-2 number, since 2×6579481669² = 86579158065414051122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6579481619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14365452 + ... + 14365909.

It is an arithmetic number, because the mean of its divisors is an integer number (1652053315).

Almost surely, 2^6579481669 is an apocalyptic number.

It is an amenable number.

6579481669 is a deficient number, since it is larger than the sum of its proper divisors (28731591).

6579481669 is a wasteful number, since it uses less digits than its factorization.

6579481669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28731590.

The product of its digits is 19595520, while the sum is 61.

The square root of 6579481669 is about 81114.0041484823. The cubic root of 6579481669 is about 1873.8316081005.

The spelling of 6579481669 in words is "six billion, five hundred seventy-nine million, four hundred eighty-one thousand, six hundred sixty-nine".